Exodus 15:23 When they came to Marah, they couldn't drink from the waters of Marah, for they were bitter. Therefore its name was called Marah. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)
Numbers 33:8 They traveled from before Hahiroth, and passed through the midst of the sea into the wilderness: and they went three days' journey in the wilderness of Etham, and encamped in Marah. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)
Numbers 33:9 They traveled from Marah, and came to Elim: and in Elim were twelve springs of water, and seventy palm trees; and they encamped there. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)
Ruth 1:20 And she said unto them: 'Call me not Naomi, call me Marah; for the Almighty hath dealt very bitterly with me. (JPS)